On the basis of studying the principle of humidity measurement and control,a humidity measurement system based on neural network and genetic algorithm was designed. In this system,DHT11 humidity sensor was used,and the humidity measurement method was optimized by using an improved neural network and genetic algorithm. The test results showed that the humidity could be controlled in the accuracy of 1. 6 × 10-2 by using this system,which enhanced the humidity measurement accuracy greatly. Moreover,the humidit...